Fuse mounting



Jan. 15, 1929. 1,699,046

G. CARPENTER FUSE MOUNTING Filed Sept. 1927 Patented Jan. 15, 1929.

UNITED STATES PATENT orrlcn.

GRANT CARPENTER, OF NEWARK, NEW JERSEY, ASSIGNOR TO WESTON ELECTRICAL INSTRUMENT CORPORATION, OF NEWARK, N E'W JERSEY, A CORPORATION OF NEW JERSEY.

Application filed September 2, 1927.

This invention relates to a fuse mounting,

and particularly to a fuse mounting for use with cartridge fuses.

An object of the invention is to provide a fuse mounting which serves as a housing for the enclosure of a cartridge fuse. A further object is toprovide a mounting WlllOh may be used in an exposed position, such as upon a panel-board or an instrument case and which protects the fuse from damage and from inadvertent contact with wires or other conductors. More particularly an ObJQCt of the invention is to provide a small mounting for miniature cartridge fuses, such as are employed in connection with measuring 1nstruments, radio receivers, laboratory test panels and the like.

These and other objects of the invent on will be apparent from the following spec fication when taken with the accompanying drawing, in which- Fig. 1 is a central section through afuse mounting which forms one embodiment of the invention, and

Figs. 2 and 3 are end and side elevations, respectively, of a cartridge fuse of the type adapted for use with the mounting shown in Fig. 1. r

In the drawings the reference numeral 1 indicates a metal sleeve which has an outer flanged head 2 and an inner threaded portion 3 for receiving a nut 4 to mount the sleeve in an aperture in an insulating panel 5. The sleeve 1 serves as one terminal of the fuse mounting and, as shown in the drawing, the electrical connection thereto may be made by the terminal or strip 6 which is clamped between the nut 41 and the panel 5.

The second terminal of the mounting is provided by the post 7 which passes through the sleeve 1 and projects beyond both ends A thereof. The post 7 is secured to the sleeve 1 by bushings of insulating material 8, 9; the surfaces of the terminals which are engaged by the bushing 8 being preferably roughened as at 10 to secure a rigid assembly of the parts. The post? is provided at a lower or inner end with a threaded extension 11 and nut 12 for securing the conductor 13 to the post. The bushing 9 is secured to the post 7 by molding the-same upon the threads of the threaded extension 11, or by threading it upon the same. The other end of the post 7 projects beyond the flanged head 2 of the FUSE MOUNTING.

Serial No. 217,148.

sleeve 1 and is threaded to receive the threaded insert 1 1 of an insulating cap 15. The cap 15 is provided with a depending flange 16 which forms a housing or chamber for the reception of a cartridge fuse.

The cartridge fuse for which this mountlng' is designed is longitudinally apertured to permit the same to slide over the extended portlon of post 7 and rest upon the flanged head 2 of the sleeve. As shown inthe drawings, the fuse consists of a tube 17 of insulating material having metallic caps 18 secured-at the opposite ends thereof by indenting the metal at spaced points 19. The tube 17 is provided with a slot 20 for re ceiving the fuse wire 21, the end, caps 18 being pressed into slot 20 to bring the ends of the fuse wire 21 inside the end surfaces of the cartridge fuse.

To prevent short-circuiting of the fuse on the stem 7, the inner edges of caps 18 fall short of the bore through the tube 17, but they do extend inwardly far enough for the upper cap 18 to engage the metallic insert 14 in the cap 15.

To inspect or renew a fuse, the cap 15 is unscrewed from the stem 7, and the fuse may then be removed if it is found to be defective. The cap 15 retains the cartridge fuse firmly upon the seat formed by the outer end of the sleeve 1, and the depending flange 16 protects the fuse from damage.

Although the invention is not limited to the construction of fuse mountings of any particular size, it provides a simple and attractive fuse mounting of small size which is well adapted for use on instrument and radio panels. Mountings for use with miniature cartridge fuses may be so designed as to present an external appearance substantially identical with that of the binding posts and terminal caps which are used on the instrument panel.

It is to be understood that the invention is not limited to the specific embodiment which has been illustrated and described herein as various changes may be made in the several parts, their relative size, shape and location without departure from the spirit of my invention as set forth in the following claims.

I claim:

1. A fuse mounting comprising a sleeve member, a post member coaxial therewith,

conducting element for electrically connecting the other end of the fuse and said second member.

2. A fuse mounting for a longitudinally 'apertured cartridge fuse comprising a tubu lar element having one end shaped to provide a seat for one end of a fuse, a post within and insulated from said element and having an end passing through and project ing beyond a fuse located on said seat end of said element, and a cap secured to the end of said post to maintain said fuse on said a seat, said cap including means for electrically connecting the other end of said fuse to said post. 7

3. A fuse mounting as set forth in claim 2 wherein said cap is provided with a depending flange for enclosing said fuse.

4. A fuse mounting for a longitudinally apertured fuse comprising a sleeve adapter to extend through an aperture in .a panel, said sleeve having an end portion at the face of the panel to provide a seat for one end of a fuse, a post passing through and insulated from said sleeve, said post having a portion passing through and projecting beyond a fuse located on said seat, a cap on said projecting portion of said post for clamping said fuse on said seat, said cap being formed of insulating material having a metallic insert therein for contacting with the other end of said fuse and with said post, and means at the respective inner ends of said sl eve and post for making circuit connections thereto.

5. A fuse mounting as set forth in claim 1-, wherein said cap is provided with a depending flange of insulating material for enclosing said fuse.

-.6. A fuse mounting comprising a sleeve having a flanged outer end providing a seat for a longitudinally apertured cartridge and an inner end threaded to receive a nut for clamping said sleeve to a panel, a post coaxial with said sleeve and secured thereto and insulated therefrom, the outer end of said post projecting beyond said seat portion of said sleeve and adapted to pass through a fuse seated thereon, and a metal bushing threaded upon said post to clamp a fuse between the same and said seat portion of said sleeve, said bushing contacting with the outer end terminal of the fuse,

In testimony whereof, I afliX my signature.

GRANT canrnurna. 

